B. Pym wrote:

Pascal J. Bourguignon wrote:

(defun counting (list &optional (from 1))
(mapcar (let ((i (1- from)))
(lambda (x)
(if (consp x)
(cons (incf i) x)
(list (incf i) x))))
list))

(let ((arguments '(aa bb cc)))
(format t "~:{~A. ~A~%~}" (counting arguments)))

1. AA
2. BB
3. CC

Gauche Scheme

(define (print-counted the-list :optional (from 0))
(for-each
(lambda (i x) (print i ". " x))
(lrange from)
the-list))

gosh> (print-counted '(a bb ccc))
0. a
1. bb
2. ccc

gosh> (print-counted '(a bb ccc) 233)
233. a
234. bb
235. ccc

Shorter:

(define (print-counted the-list :optional (from 0))
(for-each
(cut print <> ". " <>)
(lrange from)
the-list))

newLISP

(define (print-counted the-list (from 0))
(dolist (x the-list)
(println (+ from $idx) ". " x)))

(print-counted '(aa bb cc) 700)

700. aa
701. bb
702. cc

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